The lake of the ozarks is a human-made lake, so it collects runoff from coal strip-mining, fertilizers, resort wastewaters, and septic drainages. the average lake temperature is between 10∘c and 21∘c. consider the physical requirements for growth and multiplication that would allow fecal coliforms to "blossom" in the lake of the ozarks. which of the following would accurately describe these organisms?
(a)-the lake of the ozarks is a human-made lake, so it collects runoff from coal strip-mining, fertilizers, resort wastewaters, and septic drainages.
(b)-the average lake temperature is between 10∘c and 21∘c.

The organisms would accurately be described by Facultative halophiles, Mesophiles, Psychrophiles.

Explanation:

A facultative halophile can be described as an organism that manages to live in increased amount of salt conditions. As the Lake of Ozarks contains water contaminated from drainage and mining it is most likely to have excess amounts of salt in it.

The fecal coliforms are mesophiles because they blossom in a moderate temperature.

The fecal coliforms can also be classified as psychrophiles as they can survive at a temperature of 10 degrees Celsius.  

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.